<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title text-24px font-bold">乌苏市烟草局管理系统</h3>
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off" placeholder="账号">
          <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          size="large"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
          v-model="loginForm.code"
          size="large"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
        </el-input>
        <div class="login-code login-code-img mb-10px" v-html="codeUrl" @click="getCode"></div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin: 0px 0px 25px 0px">记住密码</el-checkbox>
      <el-form-item style="width: 100%">
        <el-button :loading="loading" size="large" type="primary" style="width: 100%" @click.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>乌苏市烟草局管理系统</span>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from '@/api/login'
import Cookies from 'js-cookie'
import { encrypt, decrypt } from '@/utils/jsencrypt'
import useUserStore from '@/store/modules/user'

const userStore = useUserStore()
const route = useRoute()
const router = useRouter()
const { proxy } = getCurrentInstance()

const loginForm = ref({
  username: 'admin',
  password: 'admin123',
  rememberMe: false,
  code: '',
  uuid: ''
})

const loginRules = {
  username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
  password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
  code: [{ required: true, trigger: 'change', message: '请输入验证码' }]
}

const codeUrl = ref('')
const loading = ref(false)
// 验证码开关
const captchaEnabled = ref(true)
// 注册开关
const register = ref(false)
const redirect = ref(undefined)

watch(
  route,
  (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect
  },
  { immediate: true }
)

function handleLogin() {
  proxy.$refs.loginRef.validate((valid) => {
    if (valid) {
      loading.value = true
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set('username', loginForm.value.username, { expires: 30 })
        Cookies.set('password', encrypt(loginForm.value.password), {
          expires: 30
        })
        Cookies.set('rememberMe', loginForm.value.rememberMe, { expires: 30 })
      } else {
        // 否则移除
        Cookies.remove('username')
        Cookies.remove('password')
        Cookies.remove('rememberMe')
      }
      // 调用action的登录方法
      userStore
        .login(loginForm.value)
        .then(() => {
          const query = route.query
          const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
            if (cur !== 'redirect') {
              acc[cur] = query[cur]
            }
            return acc
          }, {})
          router.push({ path: redirect.value || '/', query: otherQueryParams })
        })
        .catch(() => {
          loading.value = false
          // 重新获取验证码
          if (captchaEnabled.value) {
            getCode()
          }
        })
    }
  })
}

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled
    if (captchaEnabled.value) {
      codeUrl.value = res.img
      loginForm.value.uuid = res.uuid
    }
  })
}

function getCookie() {
  const username = Cookies.get('username')
  const password = Cookies.get('password')
  const rememberMe = Cookies.get('rememberMe')
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  }
}

getCode()
getCookie()
</script>

<style lang="scss" scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url('../assets/images/login-background.jpg');
  background-size: cover;
  background-position: center;
  position: relative;
  &::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.1);
  }
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #2c3e50;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.login-form {
  position: relative;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  width: 400px;
  padding: 35px 35px 15px 35px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  .el-input {
    height: 45px;
    margin-bottom: 10px;
    input {
      height: 45px;
      background: rgba(255, 255, 255, 0.9);
      border-radius: 8px;
      border: 1px solid rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
      &:focus {
        border-color: #409eff;
        box-shadow: 0 0 0 2px rgba(64, 158, 255, 0.2);
      }
    }
  }
  .input-icon {
    height: 45px;
    width: 16px;
    margin-left: 4px;
    color: #606266;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 45px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
    border-radius: 8px;
    transition: transform 0.3s ease;
    &:hover {
      transform: scale(1.05);
    }
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: 'Arial', sans-serif;
  font-size: 14px;
  letter-spacing: 1.5px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(5px);
  background-color: rgba(0, 0, 0, 0.2);
}
.login-code-img {
  height: 45px;
  padding-left: 12px;
}

.el-button {
  height: 45px;
  border-radius: 8px;
  font-weight: 600;
  letter-spacing: 1px;
  background: linear-gradient(135deg, #409eff, #36a3ff);
  border: none;
  box-shadow: 0 4px 12px rgba(64, 158, 255, 0.3);
  transition: all 0.3s ease;
  &:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(64, 158, 255, 0.4);
  }
  &:active {
    transform: translateY(1px);
  }
}

.el-checkbox {
  color: #606266;
  margin-bottom: 20px;
}

.link-type {
  color: #409eff;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
  &:hover {
    color: #66b1ff;
  }
}
</style>
